<template>
  <div>

    <el-row>
      <el-col :span="12">
        <h3>一、选择器</h3>
        <div>
          <h4>1.1、基本使用</h4>
          <el-select v-model="value" placeholder="请选择" style="width:300px">
            <el-option v-for="item in options" :key="item.value" :label="item.label" :value="item.value" :disabled="item.disabled">
            </el-option>
          </el-select>
        </div>

        <div>
          <h4>1.2、可清空</h4>
          <el-select v-model="value" clearable placeholder="请选择" style="width:300px">
            <el-option v-for="item in options" :key="item.value" :label="item.label" :value="item.value" :disabled="item.disabled">
            </el-option>
          </el-select>
        </div>

        <div>
          <h4>1.3、可清空多选</h4>
          <el-select v-model="value" clearable multiple collapse-tags placeholder="请选择" style="width:300px">
            <el-option v-for="item in options" :key="item.value" :label="item.label" :value="item.value" :disabled="item.disabled">
            </el-option>
          </el-select>
        </div>

        <div>
          <h4>1.4、自定义模板</h4>
          <el-select v-model="value" placeholder="请选择">
            <el-option v-for="item in cities" :key="item.value" :label="item.label" :value="item.value">
              <span style="float: left">{{ item.label }}</span>
              <i class="el-icon-edit"></i>

              <span style="float: right; color: #8492a6; font-size: 13px">{{ item.value }}</span>
            </el-option>
          </el-select>
        </div>

        <div>
          <h4>1.5、分组</h4>
          <el-select v-model="value" placeholder="请选择">
            <el-option-group v-for="group in options1" :key="group.label" :label="group.label">
              <el-option v-for="item in group.options" :key="item.value" :label="item.label" :value="item.value">
              </el-option>
            </el-option-group>
          </el-select>
        </div>

        <div>
          <h4>2.1、可搜索</h4>
          <el-select v-model="value2" filterable placeholder="请选择">
            <el-option v-for="item in options" :key="item.value" :label="item.label" :value="item.value">
            </el-option>
          </el-select>
        </div>

        <div>
          <h4>2.2、创建条目</h4>
          <el-select @change="changeSelect" v-model="value" multiple filterable allow-create default-first-option placeholder="请选择文章标签">
            <el-option v-for="item in options" :key="item.value" :label="item.label" :value="item.value">
            </el-option>
          </el-select>
        </div>

      </el-col>

      <el-col :span="1">
        <div class="line"></div>
      </el-col>

      <el-col :span="11">
        <h3>二、级联选择器</h3>
        <div>
          <h4>2.1、基础用法</h4>
          <el-cascader filterable clearable v-model="value" :options="options4" :props="props" @change="handleChange"></el-cascader>
        </div>

        <div>
          <h4>2.1、插槽自定义</h4>
          <el-cascader :options="options4">
            <template slot-scope="{ node, data }">
              <span>{{ data.label }}</span>
              <span v-if="!node.isLeaf"> ({{ data.children.length }}) </span>
            </template>
          </el-cascader>
        </div>

      </el-col>
    </el-row>

  </div>
</template>

<script>
export default {
  data () {
    return {

      value: [],
      value2: '',
      props: { multiple: true, checkStrictly: true },

      options1: [{
        label: '热门城市',
        options: [{
          value: 'Shanghai',
          label: '上海'
        }, {
          value: 'Beijing',
          label: '北京'
        }]
      }, {
        label: '城市名',
        options: [{
          value: 'Chengdu',
          label: '成都'
        }, {
          value: 'Shenzhen',
          label: '深圳'
        }, {
          value: 'Guangzhou',
          label: '广州'
        }, {
          value: 'Dalian',
          label: '大连'
        }]
      }],

      options: [{
        value: '选项1',
        label: '黄金糕',
      }, {
        value: '选项2',
        label: '双皮奶'
      }, {
        value: '选项3',
        label: '蚵仔煎'
      },
      ],

      cities: [{
        value: 'Beijing',
        label: '北京'
      }, {
        value: 'Shanghai',
        label: '上海'
      }, {
        value: 'Nanjing',
        label: '南京'
      }, {
        value: 'Chengdu',
        label: '成都'
      }, {
        value: 'Shenzhen',
        label: '深圳'
      }, {
        value: 'Guangzhou',
        label: '广州'
      }],

      options4: [{
        value: 'zhinan',
        label: '指南',
        children: [{
          value: 'shejiyuanze',
          label: '设计原则',
          children: [{
            value: 'yizhi',
            label: '一致'
          }, {
            value: 'fankui',
            label: '反馈'
          }, {
            value: 'xiaolv',
            label: '效率'
          }, {
            value: 'kekong',
            label: '可控'
          }]
        }, {
          value: 'daohang',
          label: '导航',
          children: [{
            value: 'cexiangdaohang',
            label: '侧向导航'
          }, {
            value: 'dingbudaohang',
            label: '顶部导航'
          }]
        }]
      }, {
        value: 'zujian',
        label: '组件',
        children: [{
          value: 'basic',
          label: 'Basic',
          children: [{
            value: 'layout',
            label: 'Layout 布局'
          }, {
            value: 'color',
            label: 'Color 色彩'
          }, {
            value: 'typography',
            label: 'Typography 字体'
          }, {
            value: 'icon',
            label: 'Icon 图标'
          }, {
            value: 'button',
            label: 'Button 按钮'
          }]
        }, {
          value: 'form',
          label: 'Form',
          children: [{
            value: 'radio',
            label: 'Radio 单选框'
          }, {
            value: 'checkbox',
            label: 'Checkbox 多选框'
          }, {
            value: 'input',
            label: 'Input 输入框'
          }, {
            value: 'input-number',
            label: 'InputNumber 计数器'
          }, {
            value: 'select',
            label: 'Select 选择器'
          }, {
            value: 'cascader',
            label: 'Cascader 级联选择器'
          }, {
            value: 'switch',
            label: 'Switch 开关'
          }, {
            value: 'slider',
            label: 'Slider 滑块'
          }, {
            value: 'time-picker',
            label: 'TimePicker 时间选择器'
          }, {
            value: 'date-picker',
            label: 'DatePicker 日期选择器'
          }, {
            value: 'datetime-picker',
            label: 'DateTimePicker 日期时间选择器'
          }, {
            value: 'upload',
            label: 'Upload 上传'
          }, {
            value: 'rate',
            label: 'Rate 评分'
          }, {
            value: 'form',
            label: 'Form 表单'
          }]
        }, {
          value: 'data',
          label: 'Data',
          children: [{
            value: 'table',
            label: 'Table 表格'
          }, {
            value: 'tag',
            label: 'Tag 标签'
          }, {
            value: 'progress',
            label: 'Progress 进度条'
          }, {
            value: 'tree',
            label: 'Tree 树形控件'
          }, {
            value: 'pagination',
            label: 'Pagination 分页'
          }, {
            value: 'badge',
            label: 'Badge 标记'
          }]
        }, {
          value: 'notice',
          label: 'Notice',
          children: [{
            value: 'alert',
            label: 'Alert 警告'
          }, {
            value: 'loading',
            label: 'Loading 加载'
          }, {
            value: 'message',
            label: 'Message 消息提示'
          }, {
            value: 'message-box',
            label: 'MessageBox 弹框'
          }, {
            value: 'notification',
            label: 'Notification 通知'
          }]
        }, {
          value: 'navigation',
          label: 'Navigation',
          children: [{
            value: 'menu',
            label: 'NavMenu 导航菜单'
          }, {
            value: 'tabs',
            label: 'Tabs 标签页'
          }, {
            value: 'breadcrumb',
            label: 'Breadcrumb 面包屑'
          }, {
            value: 'dropdown',
            label: 'Dropdown 下拉菜单'
          }, {
            value: 'steps',
            label: 'Steps 步骤条'
          }]
        }, {
          value: 'others',
          label: 'Others',
          children: [{
            value: 'dialog',
            label: 'Dialog 对话框'
          }, {
            value: 'tooltip',
            label: 'Tooltip 文字提示'
          }, {
            value: 'popover',
            label: 'Popover 弹出框'
          }, {
            value: 'card',
            label: 'Card 卡片'
          }, {
            value: 'carousel',
            label: 'Carousel 走马灯'
          }, {
            value: 'collapse',
            label: 'Collapse 折叠面板'
          }]
        }]
      }, {
        value: 'ziyuan',
        label: '资源',
        children: [{
          value: 'axure',
          label: 'Axure Components'
        }, {
          value: 'sketch',
          label: 'Sketch Templates'
        }, {
          value: 'jiaohu',
          label: '组件交互文档'
        }]
      }]



    }
  },
  methods: {

    changeSelect (val) {
      console.log(val)

    },

    handleChange () { }

  }
}
</script>

<style scoped>
.line {
  height: 1000px;
  margin-left: 8px;
  border-left: 1px solid black;
}
</style>